temperature=input('请输入带有符号的温度:')
if temperature[-1] in ['f','F']:
   f=eval(temperature[:-1])
   c=(f-32)/1.8
   print(f'{temperature},转为摄氏度为:{round(c,2)}摄氏度')
elif temperature[-1] in ['c','C']:
   c=eval(temperature[:-1])
   f=c*1.8+32
   print(f'{temperature},转为摄氏度为:{round(f,2)}华氏度')
else:
   print('输入格式有误')